package org.apache.lucene.analysis;

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.io.IOException;
import java.io.Reader;

/**
 * "Tokenizes" the entire stream as a single token. This is useful for data like
 * zip codes, ids, and some product names.
 */
public class KeywordAnalyzer extends Analyzer {
	public TokenStream tokenStream(String fieldName, final Reader reader) {
		return new KeywordTokenizer(reader);
	}

	public TokenStream reusableTokenStream(String fieldName, final Reader reader)
			throws IOException {
		Tokenizer tokenizer = (Tokenizer) getPreviousTokenStream();
		if (tokenizer == null) {
			tokenizer = new KeywordTokenizer(reader);
			setPreviousTokenStream(tokenizer);
		} else
			tokenizer.reset(reader);
		return tokenizer;
	}
}
